1630252277 has 2 divisors, whose sum is σ = 1630252278. Its totient is φ = 1630252276.

The previous prime is 1630252237. The next prime is 1630252289. The reversal of 1630252277 is 7722520361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1413308836 + 216943441 = 37594^2 + 14729^2 .

It is an emirp because it is prime and its reverse (7722520361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630252277 - 2¹⁶ = 1630186741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630252237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815126138 + 815126139.

It is an arithmetic number, because the mean of its divisors is an integer number (815126139).

Almost surely, 2^1630252277 is an apocalyptic number.

It is an amenable number.

1630252277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630252277 is an equidigital number, since it uses as much as digits as its factorization.

1630252277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 1630252277 is about 40376.3826636315. The cubic root of 1630252277 is about 1176.9326340472.

The spelling of 1630252277 in words is "one billion, six hundred thirty million, two hundred fifty-two thousand, two hundred seventy-seven".